 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.internal.operations;

 import org.eclipse.core.runtime.*;
 import org.eclipse.update.configuration.*;
 import org.eclipse.update.core.*;
 import org.eclipse.update.operations.*;


 public abstract class FeatureOperation extends Operation implements IFeatureOperation {
     
     protected IFeature feature;
     protected IFeature oldFeature;
     protected IConfiguredSite targetSite;

 // private boolean optionalDelta;

     
     public FeatureOperation(IConfiguredSite targetSite, IFeature feature) {
         super();
         this.feature = feature;
         this.targetSite = targetSite;
     }

     public IFeature getFeature() {
         return feature;
     }
     
     public IFeature getOldFeature() {
         return oldFeature;
     }
     
 // public boolean isOptionalDelta() {
 // return optionalDelta;
 // }

     public IConfiguredSite getTargetSite() {
         return targetSite;
     }

     public void setTargetSite(IConfiguredSite targetSite) {
         this.targetSite = targetSite;
     }
     

     static boolean unconfigure(IFeature feature, IConfiguredSite site)
         throws CoreException {
         IInstallConfiguration config = SiteManager.getLocalSite().getCurrentConfiguration();
         if (site == null)
             site = UpdateUtils.getConfigSite(feature, config);
         
         if (site != null) {
             PatchCleaner cleaner = new PatchCleaner(site, feature);
             boolean result = site.unconfigure(feature);
             cleaner.dispose();
             return result;
         }
         return false;
     }

     public void setFeature(IFeature feature) {
         this.feature = feature;
     }
     

 }

